Record where you went, without telling anyone.
Furtive is a free and open-source GPS activity recorder for Android. Walks, runs, rides, drives — the trace stays on the phone. There is no account, no server collecting your history, and nothing to opt out of.
You received a Furtive link?
A live-share link follows one recording as it happens, and opens at
/share/ on this domain. It only works complete: the part
after the # carries the decryption key, so a truncated link
cannot show anything. Open the link you were given rather than typing
this address by hand.
How live sharing works
- End-to-end encrypted. Positions are encrypted on the phone and decrypted in your browser. The key travels in the URL fragment, which browsers never send to a server — not to this one either.
- Anonymous by construction. Each share uses a throwaway identity on public Nostr relays. No account, no phone number, nothing to link one share to another.
- It ends when the activity ends. Stopping the recording stops publication and tells the viewer explicitly, so a watcher is never left guessing whether the phone simply lost signal.
- Optionally password-protected. The password is sent separately from the link and never leaves the browser.
Get the app
Releases, source code and the full threat model are on GitHub: github.com/ethicnology/furtive. Builds are reproducible, so the published APK can be verified against the source rather than trusted.